Mummy muffins – Mestemacher

Ingredients

• 150 g Mestemacher Westphalian pumpernickel
• 225 g butter
• 550 g bittersweet chocolate
• 4 eggs
• 200 g white granulated sugar
• 150 g light brown sugar
• 2 tsp. vanilla extract
• 1/4 tsp. baking powder